/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f7f9fc;
  color: #333;
  line-height: 1.6;
  padding: 20px;
}

/* Header Styling */
header {
  background-color: #dfeeff;
  padding: 2em;
  text-align: center;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

header h1 {
  font-size: 2.5em;
  color: #2c3e50;
}

header p {
  font-size: 1.2em;
  margin-top: 0.5em;
}

/* Section Styling */
main section {
  margin: 2em 0;
  padding: 1.5em;
  background-color: #ffffff;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
section h2 {
  font-size: 1.6em;
  margin-bottom: 1em;
}
/* Table Styling */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1em;
}
th, td {
  padding: 0.8em;
  text-align: left;
  border-bottom: 1px solid #ccc;
}
th {
  background-color: #f0f4ff;
}
/* Image Styling */
.expression-img {
  display: block;
  max-width: 100%;
  margin: 1em auto;
  border-radius: 10px;
}
/* Footer Styling */
footer {
  text-align: center;
  margin-top: 2em;
  padding: 1em;
  background-color: #dfeeff;
  border-radius: 8px;
}
footer a {
  text-decoration: none;
  color: #0066cc;
  font-weight: bold;
}